Pail-bottom



(No Model.)

G. W. LISK. PAIL BOTTOM.

N 374 687v Patented Deo. 13, 1887.

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UNITED 'STATES PATENT Ottica.

GEORGE WF. LISK, OF CLIFTON SPRINGS, NEW YORK.l

A. PAIL-aoTTot/l.

SPECIFICATION forming part of Letters Patent No. 374,687, dated December 13, 1887.

Application tiled O;tobcr17,1887. Serial No. 252,610. tNo model.)

To all whom, it may concern:

Be it known that I, GEORGE W. LIsK, of

Clifton Springs, in the county of Ontario and State o'f New York, have invented a new and useful Improvementl in Fail-Bottoms, which improvement is fully set forth in the following specification and shown in the accompanying drawings. y

Tin pails, when used for holding water, are

1o apt to quickly rust at the bottom, more particularly at or about the joint between the bottom and the side of the pail. This corrosion, it has been found,can be very much retarded, if not wholly prevented,by adding to the pailbottom asheet or mass of difere'nt metal-as zinc or copperwhich in the presence of water or dampness causes a mild electric action to take place, this preventing to a large degree the oxidation of the tin.

2o My inventionrelate's to an improvement in Imeans for attaching and holdinga disk ofzinc orother metal different from the metal ofwhich the pail is made to the bottom of the pail for the purpose of` preventing the corrosive action above referred to, the invention being hereinafter fully described, and more particularly pointed out in the claims. Y

Referring to the drawings, Figurel is aplan of the inner surface of the bottom of a tin pail,

o showino` m im rovement arts bein@ broken 3 c o away to better show the joint; Fig. 2, a side elevation of a portion of the pail, a part at the bottom being broken away and the bottom plate with other parts diametrically sectioned;

= Fig. 3, a transverse section of the joint between the pail-bottom and the holder for the metal disk, drawn to a much largerscale for the purpose of more clearly showing the arrangement of the parts; and Figs. l4 and 5,

4o modifications in the manner of forming the joint between the'b'ottom of the pail and the plate beneath it for holding the disk, said tigures being drawn to the same scale to which Fig. 3 is drawn.

Referring to the parts shown in the draw. ings, A is a tinpail substantially of common construction, B being the bottom thereof, made of sheet-tin. The bottom is formed with a circular concentric opening, b, the edge of the 5o tin around said opening being turned back to form a burr,` d, encircling the opening.

a is a circular plate of tin, having its edge turned to form a burr, e, to be locked with the burr d of the pail-bottom.

c is a circular disk of zinc or some metal other than the kind of which the pail-bottom is made, of such a diameter as to have its periphery meet the inner surface, h, of the burr e of the plate a,wl1ich plate serves to hold said disk-concentrically in place and against the 6o burr d of the pail-bottom.

By this construction the zinc disk cis protected from wear or damage at the under side of the pail-bottom, and is at the same time in actual contact with the bottom of the pail and theholdiug-plate a, so that electrical action may at any time take place between the three parts joinedthat is to say, the parts B, c, and a. /Vhen put together,the seam or jointaformed K by the plates B and a,is hammered or pressed 7o in a vertical direction, causing the parts at the joint to be brought firmly together, and common solder,f,may be run into 'the creases of thejoint both without and within thepail.

' I prefer to form the pail with afoot, L(/,vvhich 75 prevents the part a fromcoming in contact with the floor or, other surface when the pail is set down. lnthe form shown in Fig. t thereare no burrs formed ou the bottom of the pail and the hold- 8o.

ing-plate a, the latter having an offset part or ange, k, to surround the disk, said offset part touching the pail-bottom and soldered thereto,

In the form shown in Fig. 5 the offset part 85 k is formed on the pail-bottom, the holdingplate c'being a mere circular disk soldered to the bottom of the pail.

Vhat I claimas my invention is--Y 1. In combinationwith a metal pail-bottom 9o formed with a circular opening therethrough,

a circular disk formed of a different metal from that of which said pail-bottomis formed, placed concentrically against or over said opening in the pail-bottom, and a circular holding-plate placed to cover said disk and soldered at its periphery to said pail-bottom.

2. In combination with a metal pail-bottom formed with a circular opening therethrough,

a circular disk formed of a different metal 10o from that of which said'pail-bottomisformed, placed concentricallyT over 'said openingin the pail-bottom, and a circularholding-plate placed to cover said disk, said holding-plate being of larger diameter than said diskaud soldered to said pail-bottom beyond the periphery of said disk.

3. A metal bottom for a pail,formed with a circular opening, the latter having its edge folded over to form a burr, in combination with a circular disk formed of adifferent metal from that of which said pail-bottom is formed, placed concentrically -over said openingin the pail-bottom and against said burr, and a circular holding-plate for said disk, having its edge formed into a burr to interlock with the burr of said bottom of the pail, said disk being held between said holding-plate and the burr of the pail-bottom.

4. A metal bottom for a pail, formed With a of said disk and serving to prevent lateral m0- 3o tion ofthe latter.

GEO. W. LISK.

Witnesses:

E. B. NVHITMORE, M. L. MCDERMOTT. 

